The AquaTop 500 Watt Titanium Aquarium Heater is corrosion resistant and virtually unbreakable. The corrosion-resistant construction adds to the longevity of the heater by protecting it from damage, especially from saltwater. These titanium heaters are built to last and are effectively indestructible when compared to standard glass aquarium heaters. The heating element provides stable temperatures for aquatic creatures and eliminates harmful temperature swings.